Fidelity Research FR64s Headshell dilemma


Dear FR64S users can you help me please. I have an FR64S that i bought without a headshell. I have only just got round to getting it mounted. I did pivot to spindle distance of 231.5 (the alternative distance' I also have an armboard for 230.
I tried a Sony headshell that i had - it was 2mm short of correct alignment. So I bought a new Jelco headshell it was also too short. 
CAn you tell me what headshell does work to allow other cartridges to work. I'm just using a DL103 for alignment first as I fettle the rest of my front end.

thanks
lohanimal
So i put it at 230 pivot to spindle and can get allignment. That said it is fully forward in the headshelll.
230mm for Stevenson 
231.5mm got Baerwald

I use Feickert protractor or old version of SMARTractor. SMART is absolutely the best IMO. Feickert is much easier and faster. Depends how anal I feel that day.
Dear @lewm  @lohanimal  : What defines the P2S distance is the effective tonearm length.

You can see it in the link I posted where the calculation alignments were made it for 231.5mm. p2s distance and here you can see the calculations for 230.00mm:

https://www.vinylengine.com/tonearm_alignment_calculator_pro.php?arm1=Arm+1&l1=ps&a1lv=230&a1=la&oh1v=&oa1v=&arm2=Lofgren+A&l2=ps&a2lv=230&a2=la&oh2v=&oa2v=&arm3=Lofgren+B&l3=ps&a3lv=230&a3=lb&oh3v=&oa3v=&arm4=Stevenson&l4=ps&a4lv=230&a4=st&oh4v=&oa4v=&og=iec1&ogv=&ig=iec&igv=&cal=y&submit=calculate

Both of you can note that with 230.00mm the overhang is a little forward with any alignment, Löfgren A/B or Stevenson .

So the lohanimal alignment is neither of them but something different, 

R.